CVE-2019-20636: linux linux_kernel Out-of-bounds Write
CVSS: 7.2v2.0HighModified
AliasesUBUNTU-CVE-2019-20636DEBIAN-CVE-2019-20636
Published 08-04-2020Last modified 05-08-2024
Vulnerability summary
CVE-2019-20636 is a high (CVSS 7.2) Out-of-bounds Write vulnerability in linux linux_kernel. EPSS estimates a 0.40% chance of exploitation in the next 30 days, higher than 32.6% of scored vulnerabilities.
CVSS score
7.2/10
010
High · v2.0 (NVD)EPSS score
0.40%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 9Timeline
- 08-04-2020PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
In the Linux kernel before 5.4.12, drivers/input/input.c has out-of-bounds writes via a crafted keycode table, as demonstrated by input_set_keycode, aka CID-cb222aed03d7.
CVSS metrics
4 scores · 3 sources · 2 versionsMedium 6.7Preferred score · OSV · Ubuntu (Ecosystem advisory) · calculated from vector
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:HSourcesAll 3 agree
- OSV · DebianEcosystem advisory · calculated6.7MediumCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
- NVDNIST6.7MediumCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
High 7.2Preferred score · NVD (NIST)
AV:L/AC:L/Au:N/C:C/I:C/A:CSourcesSingle source
EPSS trend
Probability
0.40%
Chance of exploitation in the next 30 days
Percentile
33%
Versus all other CVEs
30-day change
0.00 pp
From 0.40% on 18-09-2026
18-09-202618-10-2026
EPSS score0.40%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Ubuntu35 products
- linuxAll versions (No fix recorded) | < 4.4.0-174.204 | < 4.15.0-91.92
- linux-aws< 4.4.0-1062.66 | < 4.4.0-1102.113 | < 4.15.0-1063.67
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-fips< 4.15.0-2018.18 | All versions (No fix recorded)
- linux-aws-hwe< 4.15.0-1063.67~16.04.1
Netapp17 products
- cloud_backupna
- fas_8300_firmwarena
- fas_8700_firmwarena
- fas_a400_firmwarena
- fas_baseboard_management_controller_a220na
Debian1 product
- linux< 5.4.13-1
Linux1 product
- linux_kernel< 3.16.83 | ≥ 3.17, < 4.4.210 | ≥ 4.5, < 4.9.210 | ≥ 4.10, < 4.14.165 | ≥ 4.15, < 4.19.96 | ≥ 4.20, < 5.4.12
4 vendors · 54 products
References
10 links- cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.12X Refsource MISCREPORTRelease NotesVendor Advisory
- github.com/torvalds/linux/commit/cb222aed03d798fc074be55e59d9a112338ee784X Refsource MISCREPORTPatchThird Party Advisory
lists.debian.org/debian-lts-announce/2020/06/msg00011.htmlMailing ListX Refsource MLISTThird Party Advisory- lists.debian.org/debian-lts-announce/2020/06/msg00013.htmlMailing ListX Refsource MLISTThird Party Advisory